While this group appears to want to use the seaweed as a commodity, often the point of seaweed CO2 capture is to let it sink to the bottom of the ocean, where f

While this group appears to want to use the seaweed as a commodity, often the point of seaweed CO2 capture is to let it sink to the bottom of the ocean, where for a number of reasons (pressure, temperature, lack of sunlight) degradation takes a very long time. Don't remember the article(s), but a problem was guaranteeing that it actually reached the bottom, which it didn't always do (thus making it difficult to calculate exact numbers to compare with costs).